The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
T R H Prince Charles and Princess Anne Marcus Adams Tuck RP 1953
115A. T. R. H. Prince Charles and Princess Anne. Marcus Adams. Tuck. RP
H. M. Queen with Prince Charles and Princess Anne. Marcus Adams. 699. RP
H. M. The Queen with Prince Charles and Princess Anne. Marcus Adams. RP
Her Royal Highness Princess Anne. Marcus Adams. Lansdowne. RP. 1956
H. R. H. Princess Anne. Marcus Adams. RP